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The original CeAl3 measurements report the low-temperature electronic heat-capacity and quadratic-resistivity coefficients underlying its identification as a heavy fermion material. The published abstract gives both values and the measurement range below $0.2\mathrm{K}$.

Publisher: doi.org/10.1103/PhysRevLett.35.1779

A strongly correlated material whose low-energy electronic quasiparticles have a very large thermodynamic effective mass. An enhanced electronic heat capacity coefficient, spin susceptibility and quantum-oscillation cyclotron effective mass are complementary signatures; they need not all be related by a single isotropic band mass. A Kondo lattice is an important setting for such behaviour. In CeAl3, low-temperature specific heat and quadratic resistivity provided an early quantitative example.^[ref]

A physicist associated with low-temperature studies of CeAl3 and the discovery of heavy fermion behaviour.^[ref]

Institutional history: www.wmi.badw.de/the-institute/profile

The 1975 measurements of CeAl3 below $0.2\mathrm{K}$ found an electronic heat capacity coefficient of $1.62\mathrm{J}\mathrm{mo}{\mathrm{l}}^{-1}{\mathrm{K}}^{-2}$ and a quadratic electrical-resistivity coefficient of $35\mu \mathrm{\Omega }\mathrm{cm}{\mathrm{K}}^{-2}$. These are complementary thermal and transport signatures of an unusually dense low-energy electronic spectrum.^[ref] A temperature sweep and a $C/T$ versus $T^2$ fit separate the electronic intercept from a Debye lattice term; the transport comparison tests a Fermi liquid temperature law.